Amanda from Costa Mesa writes to recommend:

1.  The Field (Irish pub), on Fifth Avenue right in the heart of the Gaslamp, is a great pub with very good food.  Try the rasher and cheese boxty.

2.  Chive on Fourth Avenue is a very stylish restaurant/bar with very good cocktails.  Try the Very Berry.
3.  The Shakespeare (British pub) is quite near downtown and has a brilliant patio for sitting outside and having a pint and some chips with curry sauce.   
Enjoy and see you at INTA!